Ceph(http://ceph.com)最近还满热门的,小弟今天来分享一下如何快速部署, 先介绍一下Ceph是新一代的分散式储存系统,Ceph提供Object storage, Block device storage,File system的服务（Ceph的File system还不稳请勿用 於生产环境）,今天将介绍Block device storage的部分. 组件简介： osd: Object Storage Device, 负责提供储存资源 monitor: 监控Ceph Cluster状态 mds: 储存Cephfs 的元数据, 非必要支组件, 只有Cephfs需要此组件 实验环境共４台伺服器 1台Ceph-deploy,3台OSD+MON,每台主机都有两颗硬碟, 代号sda,sdb sda用来安装作业系统 作业系统：ubuntu 14.04 |Hostname |Ip address |Role | |__________|_____________|_________| |ceph-admin|192.168.60.1 |admin | |ceph-1 |192.168.60.2 |mon+osd | |ceph-2 |192.168.60.3 |mon+osd | |ceph-3 |192.168.60.4 |mon+osd | |__________________________________| 步骤一：修改4台主机的/etc/hosts 192.168.60.1 ceph-admin 192.168.60.2 ceph-1 192.168.60.3 ceph-2 192.168.60.4 ceph-3 步骤二：产生ssh密钥,并复制到其他node ceph-admin#ssh-keygen ceph-admin#ssh-copy-id ceph-1 ceph-admin#ssh-copy-id ceph-2 ceph-admin#ssh-copy-id ceph-3 步骤三：在admin上增加cepg apt repo ceph-admin#wget -q -O- 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys /release.asc' | sudo apt-key add - ceph-admin#echo deb echo deb http://ceph.com/debian-firefly/ $(lsb_release -sc) main | sudo tee /etc/apt/sources.list.d/ceph.list ceph-admin#apt-get update && apt-get install ceph-deploy 步骤四：部署 以下动作依然都是在ceph-admin上完成 (1)建立工作目录 ceph-admin#mkdir ~/ceph && cd ~/ceph (2)建立Cluster,预设cluster名称为ceph ceph-admin#ceph-deploy new ceph-1 ceph-2 ceph-3 (3)在所有node上安装ceph套件 ceph-admin#ceph-deploy install ceph-1 ceph-2 ceph-3 (4)建立mon ceph-admin#ceph-deploy mon create ceph-1 ceph-2 ceph-3 (5)将所有node的密钥都复制到工作目录 ceph-admin#ceph-deploy gatherkeys ceph-1 ceph-2 ceph-3 (6)增加osd ceph-admin#ceph-deploy prepare ceph-1:/dev/sdb ceph-2:/dev/sdb ceph-3:/dev/sdb ceph-admin#ceph-deploy activate ceph-1:/dev/sdb ceph-2:/dev/sdb ceph-3:/dev/sdb (7)复制admin密钥到所有node ceph-admin#ceph-deploy admin ceph-1 ceph-2 ceph-3 (8)最後检查部署状态 ceph-1#ceph health HEALTH_OK 出现HEALTH_OK代表cluster运作正常 步骤五：挂载block device (1)挂载rbd内核模组 ceph-client#modprobe rbd (2)建立一个4G的image ceph-client#rbd create --size 4096 test (3)将test这个image map到rbd pool ceph-client#rbd map test --pool rbd (4)接着就能愉快地使用block device ceph-client#mkfs.ext4 /dev/rbd/rbd/test ceph-client#mount /dev/rbd/rbd/test /rbd 我是结合Cloudstack使用,将Ceph作为VM 硬碟的储存 http://ppt.cc/jtGG --

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